SPINDLE
The spindle has been designed and manufac-
tured to maintain long accurate life. It is perma-
nently grease packed and is equipped with pre-
loaded, super precision ball bearings. The spindle
is connected to the spindle motor by means of a
"V" belt. The tension of the belt has been set at
our factory.
To readjust the belt tension, remove the column
rear dust cover and loosen the four bolts that hold
the motor mounting bracket to the spindle housing.
The motor mounting bracket may now be moved
up or down to produce the desired belt tension.
Tighten the mounting bolts and replace the dust
cover.
NOTE: It is recommended that the spindle be
sent back to the factory as an assembled unit when
repair is deemed necessary. Inspection and repair
is facilitated when the spindle is received by us in
this manner.
TO REMOVE SPINDLE HOUSING
ASSEMBLY
(1) Use elevating handwheel to move spindle
vertically to central location on vertical
column.
(2) Remove grinding wheel, adapter, and wheel
guard from spindle. Remove front dust
cover.
(3) Remove rear dust cover.
(4) Remove cover at top of vertical column.
(5) Drive out taper pin securing elevating hand-
wheel pinion gear to elevating handwheel
shaft and remove gear.
(6) Remove (4) hex. head cap screws securing
motor mounting bracket assembly to spindle.
Lift up assembly to release the motor pulley
from the belt. Carefully remove motor
assembly.
(7) Remove belt from spindle pulley.
(8) Place support blocks between lower edge of
spindle and tie brace of spindle column at
rear of machine. Also place support blocks
between lower edge of spindle housing and
table at front of machine.
(9) Inside the vertical column under the bevel
gear, on the elevating screw will be found
the threaded head elevating screw collar.
Remove the set screw that secures the collar
to the elevating screw. You can then unscrew
collar and allow to pass over elevating screw
threads.
(10) At top of column, unscrew hex nut and re-
move bevel gear. IMPORTANT: Care mast
be taken to eliminate all possibility of the
spindle housing falling while removing ele-
vating screw.
(11) Remove spindle housing assembly from front
of machine. Do not disassemble the spindle
unit before shipping, such a procedure will
make it difficult to determine the cause of
failure.
GRINDING WHEEL
The wheel is mounted on an adapter which, in
turn, is mounted on the spindle. A special wheel
mounting wrench, furnished with each machine,
fits the wheel nut which holds the grinding wheel
on the adapter and the nut which holds the adapter
on the spindle. One grinding wheel is furnished
with your machine. The various responsible manu-
facturers of grinding wheels will gladly give you
information on special wheel needs.
GRINDING WHEEL ADAPTER
A wheel puller has been furnished to remove
the grinding wheel adapter from the spindle. To
remove the adapter, remove the wheel nut with
the spanner wrench provided and screw the puller
into the wheel adapter. Tighten the puller a screw
until the wheel adapter slips off.
WET GRINDING
All machines may be adapted for wet grinding,
but unless otherwise ordered the machine is sent
equipped for dry grinding only. Information de-
scribing the additional equipment required for wet
grinding will be sent on request.
GRINDER TABLE
The grinder table is a rugged, close grained
casting, controlled in hardness and scientifically
heat treated to relieve all internal stresses. The
table slides on hand scraped ways. One "V" and
one flat.
The table working surface has been ground and
checked on the machine itself to insure flatness and
squareness to the spindle. The table ways are
grooved to permit proper distribution of the lubri-
cating oil.
Remove and clean the table ways weekly.
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